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<div id="projectname">HDF5<span id="projectnumber"> Last Updated on 2026-09-02</span>
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<div id="projectbrief">The HDF5 Field Guide</div>
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<tr class="heading"><td colspan="2"><h2 id="header-func-members" class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ga889b19b609e4e44565467cb84c6eeb0d" id="r_ga889b19b609e4e44565467cb84c6eeb0d"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#ga889b19b609e4e44565467cb84c6eeb0d">H5LRcopy_reference</a> (<a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> obj_id, <a class="el" href="structhdset__reg__ref__t.html">hdset_reg_ref_t</a> *ref, const char *file, const char *path, const <a class="el" href="_h5public_8h.html#a7f81cce70fb546af88da24d9285d3c1c">hsize_t</a> *block_coord, <a class="el" href="structhdset__reg__ref__t.html">hdset_reg_ref_t</a> *ref_new)</td></tr>
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<tr class="memdesc:ga889b19b609e4e44565467cb84c6eeb0d"><td class="mdescLeft"> </td><td class="mdescRight">Copies data from the specified dataset to a new location and creates a reference to it. <br /></td></tr>
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<tr class="memitem:ga3056840a05520e3a5e1b77f8cdd373c4" id="r_ga3056840a05520e3a5e1b77f8cdd373c4"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#ga3056840a05520e3a5e1b77f8cdd373c4">H5LRcopy_region</a> (<a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> obj_id, <a class="el" href="structhdset__reg__ref__t.html">hdset_reg_ref_t</a> *ref, const char *file, const char *path, const <a class="el" href="_h5public_8h.html#a7f81cce70fb546af88da24d9285d3c1c">hsize_t</a> *block_coord)</td></tr>
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<tr class="memdesc:ga3056840a05520e3a5e1b77f8cdd373c4"><td class="mdescLeft"> </td><td class="mdescRight">Copies data from a referenced region to a region in a destination dataset. <br /></td></tr>
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<tr class="memitem:ga75787f84657d69421c6a8be57a9f070c" id="r_ga75787f84657d69421c6a8be57a9f070c"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#ga75787f84657d69421c6a8be57a9f070c">H5LRcreate_ref_to_all</a> (<a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> loc_id, const char *group_path, const char *ds_path, <a class="el" href="_h5public_8h.html#a8203c78e10ab2d89d8bce688a31afad3">H5_index_t</a> index_type, <a class="el" href="_h5public_8h.html#a6a6ddd1504d1ed61939d46d91d9441b9">H5_iter_order_t</a> order, <a class="el" href="_h5_rpublic_8h.html#a7d148ddc165e65b01efabfd738ac056e">H5R_type_t</a> ref_type)</td></tr>
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<tr class="memdesc:ga75787f84657d69421c6a8be57a9f070c"><td class="mdescLeft"> </td><td class="mdescRight">Creates a dataset with the region references to the data in all datasets located under a specified group in a file or creates a dataset with object references to all objects (groups or datasets) located under a specified group in a file. <br /></td></tr>
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<tr class="memitem:gacef1564aa36bdfceac13b7b2bdd8e2d8" id="r_gacef1564aa36bdfceac13b7b2bdd8e2d8"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#gacef1564aa36bdfceac13b7b2bdd8e2d8">H5LRcreate_region_references</a> (<a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> obj_id, size_t num_elem, const char **path, const <a class="el" href="_h5public_8h.html#a7f81cce70fb546af88da24d9285d3c1c">hsize_t</a> *block_coord, <a class="el" href="structhdset__reg__ref__t.html">hdset_reg_ref_t</a> *buf)</td></tr>
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<tr class="memdesc:gacef1564aa36bdfceac13b7b2bdd8e2d8"><td class="mdescLeft"> </td><td class="mdescRight">Creates an array of region references using an array of paths to datasets and an array of corresponding hyperslab descriptions. <br /></td></tr>
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<tr class="memitem:gabb053f246fd0cfcb588bafe98278b9b8" id="r_gabb053f246fd0cfcb588bafe98278b9b8"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#gabb053f246fd0cfcb588bafe98278b9b8">H5LRget_region_info</a> (<a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> obj_id, const <a class="el" href="structhdset__reg__ref__t.html">hdset_reg_ref_t</a> *ref, size_t *len, char *path, int *rank, <a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> *dtype, <a class="el" href="_h5_spublic_8h.html#a1e9590539381e3922a1582067d496304">H5S_sel_type</a> *sel_type, size_t *numelem, <a class="el" href="_h5public_8h.html#a7f81cce70fb546af88da24d9285d3c1c">hsize_t</a> *buf)</td></tr>
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<tr class="memdesc:gabb053f246fd0cfcb588bafe98278b9b8"><td class="mdescLeft"> </td><td class="mdescRight">Retrieves information about the data a region reference points to. <br /></td></tr>
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<tr class="memitem:gabbf9f8ea4d13d44d45efae5e143a157a" id="r_gabbf9f8ea4d13d44d45efae5e143a157a"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#gabbf9f8ea4d13d44d45efae5e143a157a">H5LRmake_dataset</a> (<a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> loc_id, const char *path, <a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> type_id, const size_t buf_size, const <a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> *loc_id_ref, const <a class="el" href="structhdset__reg__ref__t.html">hdset_reg_ref_t</a> *buf)</td></tr>
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<tr class="memdesc:gabbf9f8ea4d13d44d45efae5e143a157a"><td class="mdescLeft"> </td><td class="mdescRight">Creates and writes a dataset containing a list of region references. <br /></td></tr>
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<tr class="memitem:ga0cab2622e4ffba04c363d37b98b0a83b" id="r_ga0cab2622e4ffba04c363d37b98b0a83b"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#ga0cab2622e4ffba04c363d37b98b0a83b">H5LRread_region</a> (<a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> obj_id, const <a class="el" href="structhdset__reg__ref__t.html">hdset_reg_ref_t</a> *ref, <a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> mem_type, size_t *numelem, void *buf)</td></tr>
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<tr class="memdesc:ga0cab2622e4ffba04c363d37b98b0a83b"><td class="mdescLeft"> </td><td class="mdescRight">Retrieves raw data pointed to by a region reference to an application buffer. <br /></td></tr>
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<tr class="memitem:ga73fb3ab3e9b756a818e711cd335c819d" id="r_ga73fb3ab3e9b756a818e711cd335c819d"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#ga73fb3ab3e9b756a818e711cd335c819d">H5LTcopy_region</a> (const char *file_src, const char *path_src, const <a class="el" href="_h5public_8h.html#a7f81cce70fb546af88da24d9285d3c1c">hsize_t</a> *block_coord_src, const char *file_dest, const char *path_dest, const <a class="el" href="_h5public_8h.html#a7f81cce70fb546af88da24d9285d3c1c">hsize_t</a> *block_coord_dset)</td></tr>
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<tr class="memdesc:ga73fb3ab3e9b756a818e711cd335c819d"><td class="mdescLeft"> </td><td class="mdescRight">Copies data from a specified region in a source dataset to a specified region in a destination dataset. <br /></td></tr>
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<tr class="memitem:ga1eec1ca149e662c4937e4ab10c30e0f6" id="r_ga1eec1ca149e662c4937e4ab10c30e0f6"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#ga1eec1ca149e662c4937e4ab10c30e0f6">H5LTread_bitfield_value</a> (<a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> dset_id, int num_values, const unsigned *offset, const unsigned *lengths, <a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> space, int *buf)</td></tr>
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<tr class="memdesc:ga1eec1ca149e662c4937e4ab10c30e0f6"><td class="mdescLeft"> </td><td class="mdescRight">Retrieves the values of quality flags for each element to the application provided buffer. <br /></td></tr>
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<tr class="memitem:ga291c97f18425bb1136f1eab304fb0722" id="r_ga291c97f18425bb1136f1eab304fb0722"><td class="memItemLeft">H5_HLRDLL <a class="el" href="_h5public_8h.html#a3b079ecf932a5c599499cf7e298af160">herr_t</a> </td><td class="memItemRight"><a class="el" href="group___h5_l_r.html#ga291c97f18425bb1136f1eab304fb0722">H5LTread_region</a> (const char *file, const char *path, const <a class="el" href="_h5public_8h.html#a7f81cce70fb546af88da24d9285d3c1c">hsize_t</a> *block_coord, <a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> mem_type, void *buf)</td></tr>
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<tr class="memdesc:ga291c97f18425bb1136f1eab304fb0722"><td class="mdescLeft"> </td><td class="mdescRight">Reads selected data to an application buffer. <br /></td></tr>
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